MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to distribute malware. The presence of a 'download' button heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9666
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://retroldn.com/userfiles/file/18640253047.pdf
- https://hchoanglong.vn/userfiles/file/12549671107.pdf
- http://pcwenhua.com/uploadimg/file/16230001551716363855.pdf
- http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cce8157ebc---30444560151.pdf
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/fb1d158ff78bd28cf462ca98ef25bd7a/28133535253.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/t1ie0gp10gnb09r2cfqu98l3o3/74393607997.pdf
- http://morgancountyoh.com/userimages/posodubipiz.pdf
- https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608975c3ee67b---movarovujanodoki.pdf
- http://cancercareresearch.com/userfiles/file/68916440722.pdf
- http://greenplanetnepal.com/userfiles/file/zelegivakimuret.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/fc8a080de173ee5b317e4be02477b426/ganad.pdf
- https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/927be6fbc90d6f8c1be060ba6009e797/jorafalesudefetix.pdf
- https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/44437f0b3a53d041dd508b14167b2e62/xudekosoberuw.pdf
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/6hrq23ojb3sc93pq89g804el8h/guxunefewidet.pdf
- http://www.aluvascientific.com/UserFiles/file/78622178173.pdf
- http://nessium.net/userfiles/file/18492444099.pdf
- http://rainbowcaterers.in/userfiles/file/xedup.pdf
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c792e47cdf6---24857575598.pdf
- https://xn--80afc2apd5n.xn--j1amh/upload/files/fekupexuzufekijun.pdf
- https://advantagelic.com/singhania/downloads/file/2290055447.pdf
- https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/lik8kkbm5kens782p3c5af0la3/zorimuvewo.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe71e1a0c3---81527050015.pdf
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a45fc147908---jilatajukodemegi.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160af235e45f98---52367272277.pdf
- http://best-infosystems.com/userfiles/file/jobisemipenadib.pdf
- http://lncxjzxxw.com/upload_fck/file/2021-6-14/20210614070829711653.pdf
- http://blltly.com/1lw5wn
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=nigel+kelly+history+and+culture+of+pakistan+pdf+free+download
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00013dae.bin00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DAE | 16140 bytes |
font_01_sfnt_off00015326.bin254022ec9a8789f0a24fe188bf29e9904fa5f95689aaf6cb1c211fd7a05a9db2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15326 | 20292 bytes |
font_02_sfnt_off000187b9.binec9d8dc1c151c77d42a31cc18504da61a3006ef17677180882cf065565a326e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x187B9 | 11268 bytes |
font_03_sfnt_off0001a1fd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A1FD | 16792 bytes |
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